But this year is different. After decades of stalled negotiations, a peace process is finally in motion. This is the first presidential election in Colombia in which the FARC participated not as an armed group but as a political party.

Now, the two presidential candidates disagree on what should happen next.

Petro, who is committed to upholding the current accord with the FARC, won 25 percent of the vote competing against two other pro-peace candidates. Petro once belonged to an armed guerrilla group himself: the the M-19, which signed a peace deal with the Colombian government in the early 1990s.

What Comes Next?

As the June 17 presidential runoff approaches, Petro and Duque will likely seek to sharpen their differences to court supporters of the three candidates who did not advance into the second round of voting.

Petro will try to earn the trust of supporters of Sergio Fajardo, the even-keeled former mayor of Medellín who came in a very close third with just under 24 percent of votes. He also hopes to gain leftists who voted for Humberto de la Calle, the lead negotiator in Colombia’s 2016 peace deal.